Finding the Third Proportional to 6,600 and 13,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,600 : 13,618.50 = 13,618.50 : x
2. Step 2: Convert to fraction form
   6,600/13,618.50 = 13,618.50/x
3. Step 3: Cross multiply
   6,600x = 13,618.50 × 13,618.50
4. Step 4: Simplify right side
   6,600x = 185,463,542.25
5. Step 5: Solve for x
   x = 185,463,542.25/6,600
6. Step 6: Final answer
   x = 28,100.54